Can I add color to glue?

Yes, you can add acrylic paint to your glue to change the color of it. The proportion of paint to glue depends on the color you want to achieve: for a darker color, use more paint, adding a small amount at a time until the desired color is reached. Deep reds are difficult to achieve because the whiteness of the glue creates a pastel shade, however, most glues can be turned quite dark with just a small amount of paint. The color will remain the same when the glue dries.